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Biology Quizlet #16
8 terms quater 3
Term | Definition |
---|---|
biogeography | Study of past and present distribution of organisms |
homologous structure | structures that have different mature forms in different organisms but develop from the same embryonic tissues -- evidence of a common ancestor |
analogous structure | body part that is similar in function as a body part of another organism but is structurally different -- not evidence of a common ancestor |
fossil | The preserved remains or traces of an organism that lived in the past |
vestigial structures | remnant of or a structure that may have had an important function in a species' ancestors, but has no clear function in the modern species; remains from an ancestor because the gene is still present in the modern species and is expressed |
divergent evolution | evolution of one or more closely related species into different species; resulting from adaptations to different environmental conditions |
convergent evolution | Process by which unrelated organisms independently evolve similarities when adapting to similar environments |
embryology | study of embryos and their development |